diff options
Diffstat (limited to 'src/main/java/com/lowagie/text/pdf/CJKFont.java')
| -rw-r--r-- | src/main/java/com/lowagie/text/pdf/CJKFont.java | 626 |
1 files changed, 626 insertions, 0 deletions
diff --git a/src/main/java/com/lowagie/text/pdf/CJKFont.java b/src/main/java/com/lowagie/text/pdf/CJKFont.java new file mode 100644 index 0000000..2137faf --- /dev/null +++ b/src/main/java/com/lowagie/text/pdf/CJKFont.java @@ -0,0 +1,626 @@ +/*
+ * $Id: CJKFont.java,v 1.64 2005/05/04 14:33:05 blowagie Exp $
+ * $Name: $
+ *
+ * Copyright 2000, 2001, 2002 by Paulo Soares.
+ *
+ * The contents of this file are subject to the Mozilla Public License Version 1.1
+ * (the "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the License.
+ *
+ * The Original Code is 'iText, a free JAVA-PDF library'.
+ *
+ * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
+ * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
+ * All Rights Reserved.
+ * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
+ * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
+ *
+ * Contributor(s): all the names of the contributors are added in the source code
+ * where applicable.
+ *
+ * Alternatively, the contents of this file may be used under the terms of the
+ * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
+ * provisions of LGPL are applicable instead of those above. If you wish to
+ * allow use of your version of this file only under the terms of the LGPL
+ * License and not to allow others to use your version of this file under
+ * the MPL, indicate your decision by deleting the provisions above and
+ * replace them with the notice and other provisions required by the LGPL.
+ * If you do not delete the provisions above, a recipient may use your version
+ * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the MPL as stated above or under the terms of the GNU
+ * Library General Public License as published by the Free Software Foundation;
+ * either version 2 of the License, or any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
+ * details.
+ *
+ * If you didn't download this code from the following link, you should check if
+ * you aren't using an obsolete version:
+ * http://www.lowagie.com/iText/
+ */
+
+package com.lowagie.text.pdf;
+
+import com.lowagie.text.DocumentException;
+import java.io.*;
+import java.util.HashMap;
+import java.util.Properties;
+import java.util.Hashtable;
+import java.util.StringTokenizer;
+import java.util.Enumeration;
+
+/**
+ * Creates a CJK font compatible with the fonts in the Adobe Asian font Pack.
+ *
+ * @author Paulo Soares (psoares@consiste.pt)
+ */
+
+class CJKFont extends BaseFont {
+ /** The encoding used in the PDF document for CJK fonts
+ */
+ static final String CJK_ENCODING = "UnicodeBigUnmarked";
+ private static final int FIRST = 0;
+ private static final int BRACKET = 1;
+ private static final int SERIAL = 2;
+ private static final int V1Y = 880;
+
+ static Properties cjkFonts = new Properties();
+ static Properties cjkEncodings = new Properties();
+ static Hashtable allCMaps = new Hashtable();
+ static Hashtable allFonts = new Hashtable();
+ private static boolean propertiesLoaded = false;
+
+ /** The font name */
+ private String fontName;
+ /** The style modifier */
+ private String style = "";
+ /** The CMap name associated with this font */
+ private String CMap;
+
+ private boolean cidDirect = false;
+
+ private char[] translationMap;
+ private IntHashtable vMetrics;
+ private IntHashtable hMetrics;
+ private HashMap fontDesc;
+ private boolean vertical = false;
+
+ private static void loadProperties() {
+ if (propertiesLoaded)
+ return;
+ synchronized (allFonts) {
+ if (propertiesLoaded)
+ return;
+ try {
+ InputStream is = getResourceStream(RESOURCE_PATH + "cjkfonts.properties");
+ cjkFonts.load(is);
+ is.close();
+ is = getResourceStream(RESOURCE_PATH + "cjkencodings.properties");
+ cjkEncodings.load(is);
+ is.close();
+ }
+ catch (Exception e) {
+ cjkFonts = new Properties();
+ cjkEncodings = new Properties();
+ }
+ propertiesLoaded = true;
+ }
+ }
+
+ /** Creates a CJK font.
+ * @param fontName the name of the font
+ * @param enc the encoding of the font
+ * @param emb always <CODE>false</CODE>. CJK font and not embedded
+ * @throws DocumentException on error
+ * @throws IOException on error
+ */
+ CJKFont(String fontName, String enc, boolean emb) throws DocumentException, IOException {
+ loadProperties();
+ fontType = FONT_TYPE_CJK;
+ String nameBase = getBaseName(fontName);
+ if (!isCJKFont(nameBase, enc))
+ throw new DocumentException("Font '" + fontName + "' with '" + enc + "' encoding is not a CJK font.");
+ if (nameBase.length() < fontName.length()) {
+ style = fontName.substring(nameBase.length());
+ fontName = nameBase;
+ }
+ this.fontName = fontName;
+ encoding = CJK_ENCODING;
+ vertical = enc.endsWith("V");
+ CMap = enc;
+ if (enc.startsWith("Identity-")) {
+ cidDirect = true;
+ String s = cjkFonts.getProperty(fontName);
+ s = s.substring(0, s.indexOf('_'));
+ char c[] = (char[])allCMaps.get(s);
+ if (c == null) {
+ c = readCMap(s);
+ if (c == null)
+ throw new DocumentException("The cmap " + s + " does not exist as a resource.");
+ c[CID_NEWLINE] = '\n';
+ allCMaps.put(s, c);
+ }
+ translationMap = c;
+ }
+ else {
+ char c[] = (char[])allCMaps.get(enc);
+ if (c == null) {
+ String s = cjkEncodings.getProperty(enc);
+ if (s == null)
+ throw new DocumentException("The resource cjkencodings.properties does not contain the encoding " + enc);
+ StringTokenizer tk = new StringTokenizer(s);
+ String nt = tk.nextToken();
+ c = (char[])allCMaps.get(nt);
+ if (c == null) {
+ c = readCMap(nt);
+ allCMaps.put(nt, c);
+ }
+ if (tk.hasMoreTokens()) {
+ String nt2 = tk.nextToken();
+ char m2[] = readCMap(nt2);
+ for (int k = 0; k < 0x10000; ++k) {
+ if (m2[k] == 0)
+ m2[k] = c[k];
+ }
+ allCMaps.put(enc, m2);
+ c = m2;
+ }
+ }
+ translationMap = c;
+ }
+ fontDesc = (HashMap)allFonts.get(fontName);
+ if (fontDesc == null) {
+ fontDesc = readFontProperties(fontName);
+ allFonts.put(fontName, fontDesc);
+ }
+ hMetrics = (IntHashtable)fontDesc.get("W");
+ vMetrics = (IntHashtable)fontDesc.get("W2");
+ }
+
+ /** Checks if its a valid CJK font.
+ * @param fontName the font name
+ * @param enc the encoding
+ * @return <CODE>true</CODE> if it is CJK font
+ */
+ public static boolean isCJKFont(String fontName, String enc) {
+ loadProperties();
+ String encodings = cjkFonts.getProperty(fontName);
+ return (encodings != null && (enc.equals("Identity-H") || enc.equals("Identity-V") || encodings.indexOf("_" + enc + "_") >= 0));
+ }
+
+ public int getWidth(String text) {
+ int total = 0;
+ for (int k = 0; k < text.length(); ++k) {
+ int c = text.charAt(k);
+ if (!cidDirect)
+ c = translationMap[c];
+ int v;
+ if (vertical)
+ v = vMetrics.get(c);
+ else
+ v = hMetrics.get(c);
+ if (v > 0)
+ total += v;
+ else
+ total += 1000;
+ }
+ return total;
+ }
+
+ int getRawWidth(int c, String name) {
+ return 0;
+ }
+
+ public int getKerning(char char1, char char2) {
+ return 0;
+ }
+
+ private PdfDictionary getFontDescriptor() {
+ PdfDictionary dic = new PdfDictionary(PdfName.FONTDESCRIPTOR);
+ dic.put(PdfName.ASCENT, new PdfLiteral((String)fontDesc.get("Ascent")));
+ dic.put(PdfName.CAPHEIGHT, new PdfLiteral((String)fontDesc.get("CapHeight")));
+ dic.put(PdfName.DESCENT, new PdfLiteral((String)fontDesc.get("Descent")));
+ dic.put(PdfName.FLAGS, new PdfLiteral((String)fontDesc.get("Flags")));
+ dic.put(PdfName.FONTBBOX, new PdfLiteral((String)fontDesc.get("FontBBox")));
+ dic.put(PdfName.FONTNAME, new PdfName(fontName + style));
+ dic.put(PdfName.ITALICANGLE, new PdfLiteral((String)fontDesc.get("ItalicAngle")));
+ dic.put(PdfName.STEMV, new PdfLiteral((String)fontDesc.get("StemV")));
+ PdfDictionary pdic = new PdfDictionary();
+ pdic.put(PdfName.PANOSE, new PdfString((String)fontDesc.get("Panose"), null));
+ dic.put(PdfName.STYLE, pdic);
+ return dic;
+ }
+
+ private PdfDictionary getCIDFont(PdfIndirectReference fontDescriptor, IntHashtable cjkTag) {
+ PdfDictionary dic = new PdfDictionary(PdfName.FONT);
+ dic.put(PdfName.SUBTYPE, PdfName.CIDFONTTYPE0);
+ dic.put(PdfName.BASEFONT, new PdfName(fontName + style));
+ dic.put(PdfName.FONTDESCRIPTOR, fontDescriptor);
+ int keys[] = cjkTag.toOrderedKeys();
+ String w = convertToHCIDMetrics(keys, hMetrics);
+ if (w != null)
+ dic.put(PdfName.W, new PdfLiteral(w));
+ if (vertical) {
+ w = convertToVCIDMetrics(keys, vMetrics, hMetrics);;
+ if (w != null)
+ dic.put(PdfName.W2, new PdfLiteral(w));
+ }
+ else
+ dic.put(PdfName.DW, new PdfNumber(1000));
+ PdfDictionary cdic = new PdfDictionary();
+ cdic.put(PdfName.REGISTRY, new PdfString((String)fontDesc.get("Registry"), null));
+ cdic.put(PdfName.ORDERING, new PdfString((String)fontDesc.get("Ordering"), null));
+ cdic.put(PdfName.SUPPLEMENT, new PdfLiteral((String)fontDesc.get("Supplement")));
+ dic.put(PdfName.CIDSYSTEMINFO, cdic);
+ return dic;
+ }
+
+ private PdfDictionary getFontBaseType(PdfIndirectReference CIDFont) {
+ PdfDictionary dic = new PdfDictionary(PdfName.FONT);
+ dic.put(PdfName.SUBTYPE, PdfName.TYPE0);
+ String name = fontName;
+ if (style.length() > 0)
+ name += "-" + style.substring(1);
+ name += "-" + CMap;
+ dic.put(PdfName.BASEFONT, new PdfName(name));
+ dic.put(PdfName.ENCODING, new PdfName(CMap));
+ dic.put(PdfName.DESCENDANTFONTS, new PdfArray(CIDFont));
+ return dic;
+ }
+
+ void writeFont(PdfWriter writer, PdfIndirectReference ref, Object params[]) throws DocumentException, IOException {
+ IntHashtable cjkTag = (IntHashtable)params[0];
+ PdfIndirectReference ind_font = null;
+ PdfObject pobj = null;
+ PdfIndirectObject obj = null;
+ pobj = getFontDescriptor();
+ if (pobj != null){
+ obj = writer.addToBody(pobj);
+ ind_font = obj.getIndirectReference();
+ }
+ pobj = getCIDFont(ind_font, cjkTag);
+ if (pobj != null){
+ obj = writer.addToBody(pobj);
+ ind_font = obj.getIndirectReference();
+ }
+ pobj = getFontBaseType(ind_font);
+ writer.addToBody(pobj, ref);
+ }
+
+ private float getDescNumber(String name) {
+ return Integer.parseInt((String)fontDesc.get(name));
+ }
+
+ private float getBBox(int idx) {
+ String s = (String)fontDesc.get("FontBBox");
+ StringTokenizer tk = new StringTokenizer(s, " []\r\n\t\f");
+ String ret = tk.nextToken();
+ for (int k = 0; k < idx; ++k)
+ ret = tk.nextToken();
+ return Integer.parseInt(ret);
+ }
+
+ /** Gets the font parameter identified by <CODE>key</CODE>. Valid values
+ * for <CODE>key</CODE> are <CODE>ASCENT</CODE>, <CODE>CAPHEIGHT</CODE>, <CODE>DESCENT</CODE>
+ * and <CODE>ITALICANGLE</CODE>.
+ * @param key the parameter to be extracted
+ * @param fontSize the font size in points
+ * @return the parameter in points
+ */
+ public float getFontDescriptor(int key, float fontSize) {
+ switch (key) {
+ case AWT_ASCENT:
+ case ASCENT:
+ return getDescNumber("Ascent") * fontSize / 1000;
+ case CAPHEIGHT:
+ return getDescNumber("CapHeight") * fontSize / 1000;
+ case AWT_DESCENT:
+ case DESCENT:
+ return getDescNumber("Descent") * fontSize / 1000;
+ case ITALICANGLE:
+ return getDescNumber("ItalicAngle");
+ case BBOXLLX:
+ return fontSize * getBBox(0) / 1000;
+ case BBOXLLY:
+ return fontSize * getBBox(1) / 1000;
+ case BBOXURX:
+ return fontSize * getBBox(2) / 1000;
+ case BBOXURY:
+ return fontSize * getBBox(3) / 1000;
+ case AWT_LEADING:
+ return 0;
+ case AWT_MAXADVANCE:
+ return fontSize * (getBBox(2) - getBBox(0)) / 1000;
+ }
+ return 0;
+ }
+
+ public String getPostscriptFontName() {
+ return fontName;
+ }
+
+ /** Gets the full name of the font. If it is a True Type font
+ * each array element will have {Platform ID, Platform Encoding ID,
+ * Language ID, font name}. The interpretation of this values can be
+ * found in the Open Type specification, chapter 2, in the 'name' table.<br>
+ * For the other fonts the array has a single element with {"", "", "",
+ * font name}.
+ * @return the full name of the font
+ */
+ public String[][] getFullFontName() {
+ return new String[][]{{"", "", "", fontName}};
+ }
+
+ /** Gets the family name of the font. If it is a True Type font
+ * each array element will have {Platform ID, Platform Encoding ID,
+ * Language ID, font name}. The interpretation of this values can be
+ * found in the Open Type specification, chapter 2, in the 'name' table.<br>
+ * For the other fonts the array has a single element with {"", "", "",
+ * font name}.
+ * @return the family name of the font
+ */
+ public String[][] getFamilyFontName() {
+ return getFullFontName();
+ }
+
+ static char[] readCMap(String name) {
+ try {
+ name = name + ".cmap";
+ InputStream is = getResourceStream(RESOURCE_PATH + name);
+ char c[] = new char[0x10000];
+ for (int k = 0; k < 0x10000; ++k)
+ c[k] = (char)((is.read() << 8) + is.read());
+ return c;
+ }
+ catch (Exception e) {
+ // empty on purpose
+ }
+ return null;
+ }
+
+ static IntHashtable createMetric(String s) {
+ IntHashtable h = new IntHashtable();
+ StringTokenizer tk = new StringTokenizer(s);
+ while (tk.hasMoreTokens()) {
+ int n1 = Integer.parseInt(tk.nextToken());
+ h.put(n1, Integer.parseInt(tk.nextToken()));
+ }
+ return h;
+ }
+
+ static String convertToHCIDMetrics(int keys[], IntHashtable h) {
+ if (keys.length == 0)
+ return null;
+ int lastCid = 0;
+ int lastValue = 0;
+ int start;
+ for (start = 0; start < keys.length; ++start) {
+ lastCid = keys[start];
+ lastValue = h.get(lastCid);
+ if (lastValue != 0) {
+ ++start;
+ break;
+ }
+ }
+ if (lastValue == 0)
+ return null;
+ StringBuffer buf = new StringBuffer();
+ buf.append('[');
+ buf.append(lastCid);
+ int state = FIRST;
+ for (int k = start; k < keys.length; ++k) {
+ int cid = keys[k];
+ int value = h.get(cid);
+ if (value == 0)
+ continue;
+ switch (state) {
+ case FIRST: {
+ if (cid == lastCid + 1 && value == lastValue) {
+ state = SERIAL;
+ }
+ else if (cid == lastCid + 1) {
+ state = BRACKET;
+ buf.append('[').append(lastValue);
+ }
+ else {
+ buf.append('[').append(lastValue).append(']').append(cid);
+ }
+ break;
+ }
+ case BRACKET: {
+ if (cid == lastCid + 1 && value == lastValue) {
+ state = SERIAL;
+ buf.append(']').append(lastCid);
+ }
+ else if (cid == lastCid + 1) {
+ buf.append(' ').append(lastValue);
+ }
+ else {
+ state = FIRST;
+ buf.append(' ').append(lastValue).append(']').append(cid);
+ }
+ break;
+ }
+ case SERIAL: {
+ if (cid != lastCid + 1 || value != lastValue) {
+ buf.append(' ').append(lastCid).append(' ').append(lastValue).append(' ').append(cid);
+ state = FIRST;
+ }
+ break;
+ }
+ }
+ lastValue = value;
+ lastCid = cid;
+ }
+ switch (state) {
+ case FIRST: {
+ buf.append('[').append(lastValue).append("]]");
+ break;
+ }
+ case BRACKET: {
+ buf.append(' ').append(lastValue).append("]]");
+ break;
+ }
+ case SERIAL: {
+ buf.append(' ').append(lastCid).append(' ').append(lastValue).append(']');
+ break;
+ }
+ }
+ return buf.toString();
+ }
+
+ static String convertToVCIDMetrics(int keys[], IntHashtable v, IntHashtable h) {
+ if (keys.length == 0)
+ return null;
+ int lastCid = 0;
+ int lastValue = 0;
+ int lastHValue = 0;
+ int start;
+ for (start = 0; start < keys.length; ++start) {
+ lastCid = keys[start];
+ lastValue = v.get(lastCid);
+ if (lastValue != 0) {
+ ++start;
+ break;
+ }
+ else
+ lastHValue = h.get(lastCid);
+ }
+ if (lastValue == 0)
+ return null;
+ if (lastHValue == 0)
+ lastHValue = 1000;
+ StringBuffer buf = new StringBuffer();
+ buf.append('[');
+ buf.append(lastCid);
+ int state = FIRST;
+ for (int k = start; k < keys.length; ++k) {
+ int cid = keys[k];
+ int value = v.get(cid);
+ if (value == 0)
+ continue;
+ int hValue = h.get(lastCid);
+ if (hValue == 0)
+ hValue = 1000;
+ switch (state) {
+ case FIRST: {
+ if (cid == lastCid + 1 && value == lastValue && hValue == lastHValue) {
+ state = SERIAL;
+ }
+ else {
+ buf.append(' ').append(lastCid).append(' ').append(-lastValue).append(' ').append(lastHValue / 2).append(' ').append(V1Y).append(' ').append(cid);
+ }
+ break;
+ }
+ case SERIAL: {
+ if (cid != lastCid + 1 || value != lastValue || hValue != lastHValue) {
+ buf.append(' ').append(lastCid).append(' ').append(-lastValue).append(' ').append(lastHValue / 2).append(' ').append(V1Y).append(' ').append(cid);
+ state = FIRST;
+ }
+ break;
+ }
+ }
+ lastValue = value;
+ lastCid = cid;
+ lastHValue = hValue;
+ }
+ buf.append(' ').append(lastCid).append(' ').append(-lastValue).append(' ').append(lastHValue / 2).append(' ').append(V1Y).append(" ]");
+ return buf.toString();
+ }
+
+ static HashMap readFontProperties(String name) {
+ try {
+ name += ".properties";
+ InputStream is = getResourceStream(RESOURCE_PATH + name);
+ Properties p = new Properties();
+ p.load(is);
+ is.close();
+ IntHashtable W = createMetric(p.getProperty("W"));
+ p.remove("W");
+ IntHashtable W2 = createMetric(p.getProperty("W2"));
+ p.remove("W2");
+ HashMap map = new HashMap();
+ for (Enumeration e = p.keys(); e.hasMoreElements();) {
+ Object obj = e.nextElement();
+ map.put(obj, p.getProperty((String)obj));
+ }
+ map.put("W", W);
+ map.put("W2", W2);
+ return map;
+ }
+ catch (Exception e) {
+ // empty on purpose
+ }
+ return null;
+ }
+
+ public char getUnicodeEquivalent(char c) {
+ if (cidDirect)
+ return translationMap[c];
+ return c;
+ }
+
+ public char getCidCode(char c) {
+ if (cidDirect)
+ return c;
+ return translationMap[c];
+ }
+
+ /** Checks if the font has any kerning pairs.
+ * @return always <CODE>false</CODE>
+ */
+ public boolean hasKernPairs() {
+ return false;
+ }
+
+ /**
+ * Checks if a character exists in this font.
+ * @param c the character to check
+ * @return <CODE>true</CODE> if the character has a glyph,
+ * <CODE>false</CODE> otherwise
+ */
+ public boolean charExists(char c) {
+ return translationMap[c] != 0;
+ }
+
+ /**
+ * Sets the character advance.
+ * @param c the character
+ * @param advance the character advance normalized to 1000 units
+ * @return <CODE>true</CODE> if the advance was set,
+ * <CODE>false</CODE> otherwise. Will always return <CODE>false</CODE>
+ */
+ public boolean setCharAdvance(char c, int advance) {
+ return false;
+ }
+
+ /**
+ * Sets the font name that will appear in the pdf font dictionary.
+ * Use with care as it can easily make a font unreadable if not embedded.
+ * @param name the new font name
+ */
+ public void setPostscriptFontName(String name) {
+ fontName = name;
+ }
+
+ public boolean setKerning(char char1, char char2, int kern) {
+ return false;
+ }
+
+ public int[] getCharBBox(char c) {
+ return null;
+ }
+
+ protected int[] getRawCharBBox(int c, String name) {
+ return null;
+ }
+}
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